Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires laravel/scout 5.8 (exact version match: 5.8, 5.8.0 or 5.8.0.0), found laravel/scout[dev-master, v0.1.0, v0.1.1, v0.1.2, v1.0.0, ..., v1.1.12, v2.0.0, ..., 2.0.x-dev, v3.0.0, ..., 3.0.x-dev, v4.0.0, ..., 4.0.x-dev, v5.0.0, ..., 5.0.x-dev, v6.0.0, ..., v6.1.3, v7.0.0, ..., v7.2.1, v8.0.0, ..., 8.x-dev, v9.0.0, ..., 9.x-dev, v10.0.0, ..., 10.x-dev, 11.x-dev (alias of dev-master)] but it does not match the constraint.